1345255153673 has 2 divisors, whose sum is σ = 1345255153674. Its totient is φ = 1345255153672.

The previous prime is 1345255153621. The next prime is 1345255153681. The reversal of 1345255153673 is 3763515525431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1223926241344 + 121328912329 = 1106312^2 + 348323^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345255153673 - 2¹⁶ = 1345255088137 is a prime.

It is a super-2 number, since 2×1345255153673² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1345255153573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672627576836 + 672627576837.

It is an arithmetic number, because the mean of its divisors is an integer number (672627576837).

Almost surely, 2^{1345255153673} is an apocalyptic number.

It is an amenable number.

1345255153673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345255153673 is an equidigital number, since it uses as much as digits as its factorization.

1345255153673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670000, while the sum is 50.

The spelling of 1345255153673 in words is "one trillion, three hundred forty-five billion, two hundred fifty-five million, one hundred fifty-three thousand, six hundred seventy-three".